Take a piece of card or something you can write your ring number/name/phone number on to attach to the crate. It was a rule introduced earlier this year that you should have your number attached to a dogs crate so if you needed to be away from him and he was in distress, the organisers can contact you immediately. Some shows are more on the ball about enforcing the rule than others, but if they happen to have a KC inspection, they are more likely to check everyone complies.
and don't forget a pen to write down the results so that you can share on here - good luck!